Water-heating and thermal storage apparatus.



D. B. MORISON.

WATER HEATING AND THERMAL STORAGE APPARATUS.

APPLICATION FILED AUGA, 190B.

Patented Nov. ,14, 1911.

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by %LLM% Toi-dll whom; 'itimgiy "concern:

' Be "1t"ltnown fthat'" If, DONALD BARN, s Momsubject oith King of GreatBritain and reland rsidin'g'at Hartlepool Engine 35 WorkiiHartlpdol}-inthe county of urlrain"-."Eiflanil," iiaye invented certain new andusefuImprovements in ater-Heating and frherraai stomge Apparatus, of whichtli' fol-lot vi'rig is"id-specification. 10' {Itiscomfnorirpractice insteam generating plantsg es'peeially-at electric power stations,-atj'p'e'riods 'f;,'r" elatitj'ely lightload, toi -pass steam; no1en"rt'1'uired for Q power purposes",-'-irito 4 'eservbircontaining feedwater, 1 5 thest b nga'jdmjtted either above or, be *eland its latentheat uti he'ternperature of the water. reaiterisuppliedato the boilerape): ofrelatively heavy load, 20.: theirbyf 'nabling; an 'evap'orationrate to be obtainedfinth e .boiler consi erablyhigher than the oiina 1'and correspondingly greater. supplyg'ofisteam, tofbe generated; at aanr'g 'n nl-thei'power demands from the en- 25 ginseng-at maiiimum.Moreover, on a redifctioiiof pressure, steam is regenerated iiifthe Tlesivoii a'rid may be directly suplied to an engine. "{It is also commonpractice-t'o exhatist steam forfeed water 230 heating purposes, thesteam being supplied tOyfllIe water h'eater either continuously orintermittently; 1 :It often that non-condensing steamengines-frontthfnature of their work, re- 1325. quire e'fifnj'int'er'mittently or irregularly, ofithat'they eixhau'st at longintervals as in a 'niiifig' pumpi'h engine, and that it is toutilizeflthe exhaust steam from Q ower production, as for p vdrirefa'flow pressure engine, or for us'eiiii" 3emrS.;-0r for otherpurposes. When hosretei thesupply of steam to'the lowpressu're engineprother apparatus is at y times irregular:of -intermittent,.such irregu- 5larity is 'u'elldtuoum to'be generally disadvantageous: lar'd 'meanshave heretofore been adopted 'for'n i supply by means' of' thermal 'st'ora ge 'appa'ra M tits, (ceinmdin lmdwnas 'regrneratii'e' ac- 5Dcreature interposed bi-tween the iron eta densing 'engiiie' aiid the lowpressure enf {argue-sigh" ,thr" non-condensing engine and other 'exhaisteain ermsuming "appa Specification of Le tters Yatent. Applicationfiled August 4, 1908. Serial No. 4463357.

aproringthe regularity of 'wa'pnanna'riireann rniamiiar s'ronaen'arranarus.

and re-teva'porated'in the storage reservoir according to and demand; ict a The object of the present invention is to. provide increaseduniformity, of steam-supply available for-such a-IOWpreSsure-engme .orapparatus, by means of a novel combination of Panama. 14, 1911...

55 the relation between supply 'water heater and thermal f stora'ge,

apparatus adapted to usefully erhp yflas may bepracticable, thehuman-Ernie heat in thecycl c condenser;=

omprising thefboiler and? "l J '0 I I a I With this object III-VERY;my-ianventionf consists in a novellarrangemenfi'of apparatus andcombination of parts-P'm'ore'particularly set .for-th' in the annexedclai m.'-i whereby. when the from the non-condensing ,engine' exceedsthat required by the 1owpressure* engine or L'fo supply of ezthau'ststeam other-steam consuming apparatiis;"some or all of the steam isautomatically caused-filo overcome .a head of, or otherwise mix'with,

ter 'for' thepurpos'e of heating it, which" acthe exhaust steam supplyis not in excess of so that under these conditions of working there isno loss ofsteam pressure;

In the accompanyingdrawings-Figure l is a diagrammatic view illustratingthe cycle of: operations according'to my invention and Fig. 2alsodiagrammatic-Allustrates a feed water supply arrangement.

Referring to Fig. 1, which supplies steam by way of the pipe I) (Z, (l,dir 'ctlyto thelow pressure engine 0, herein shown as a turbine; or,when thesupply of steam fromthe high pressure engine is greater thanthat required by the turbine, steamis led by way of the pipe f to thefeed water lieating and by way of the pipe tion however ceasesautomatically whenever a 18 a steam generator water in;as.chamberfeoxitaining;feed orso'ther' that required by the low pressureeng ne,

to the high pressure engine '0, which exhausts l I l i t i s feed pump 8by way of the pipe t, thus eo1n-' charges the water of condensation intothe apparatus. 9 by way of the pipe, p. The heated feed water can leavethe ap aratus by way of the pipe 9, and flow into tie tank 1", whence itis supplied to the boiler by the pleting thecycle. It will be seen thatduring this cycle" the water enters or can enter the apparatus 9 twice,once in the form of steam, and the other time in the form of water.

This double passage through the apparatus is animportant feature of thecycle of operationsemployed in carrying my invention into effect. f

Instead of passing the whole of the water required for the boilers intothe receiver, I may by-pass some of this by way of the pipe 13, Fig. 1,the amount so by-passed being capable of being regulated by means of thethree way cock 14. Non-return valves 15 and 16 are preferably providedon the pipes (Z and 13. This water passed into the receiver mayadvantageously consist of feed water drawn from the condenser of thelowpressure engine or from other apparatus in which the steam from thenon-condensing engine or the thermal storage reservoir isultimatelycondensed, which water may be supplemented by auxiliary feed water. in

order that the available heat in the exhaust. steam may be absorbed bythe water in the apparatus without an excessive variation in the exittemperature of this water, it is usually desirable to construct theapparatus so as to contain a quantity of water which is considerablewith respect to the average rate of supply of the steam. I

k is an automatic valve for controlling the supply of steam to theapparatus 9 and to the low pressure engine in accordance with therelation betweensupply and demand. This valve is suitably disposed onthe pipe (Z, between the branches f and h or at the junction of thepipes d, (l, and f and is controlled by the steam pressure in the pipeI], or by the governor of the low pressure engine, so that, when theexhauststeam supply from the non-condensing engine is equal to, or lessthan, the demands of the low pressure engine, the valve acts to throttleor cut oil the direct flow of steam from (l to (l, and thus cause steamto pass into the receiver g.

If the pressure in the receiver is liable to fall considerably belowatmosphere, it may be inconvenient or impossible to maintain a constantwater level in the receiver by means of the arrangement.illustrated inFig. 1; and I may then, or in any other case when desired, otherwisecontrol the water level as by means of a float-actuated valve on-thewater admission pie. This arrangement is shown in Fig. 2, w ere 20 is apump which delivers the condensed steam from the low pressure engineinto the tank 18; 19 is the pipe for conveying the water from this tankpassed from to the thermal apparatus 9; 21 is a pipe with ahand-controlled valve 22 for allowing a controllable portion of "thewater to pass. from the tank 18 to the pipe 23, whence it flows directto the boiler feed tank 1-, and 2-4 is an overflow pipe'from the tank 18to the pipe 23.

Having now described my invention,\vliat I claim as new and desire tosecure by Letters Patent is 1. In combination, a high pressure steamengine, a water-heating and thermal-storage apparatus, a low pressuresteam engine, a pipe for delivering steam from the exhaust of the highpressure engine to the thermalstorage apparatus, and a pipe fordelivering steam from the thermal-storage apparatus to the low pressureengine, and another pipe connected so that steam may be passed from theexhaust of the high pressure engmeto the low pressure engine withoutPIISSlDgJIltO the thermal-storage apparatus, and means for automaticallyvarying the ratio of the quantity of steam passing into thethermalstorage apparatus to the quantity of steam passing directly fromthe high pressure engine to the low pressure engine with variations inthe ratio of the quantity of steam' supplied by the exhaust of the highpressure. engine to the quantity of steam taken by the low pressureengine.

2. In combination. a high ressure steam engine, a water heating andticrmal-storage apparatus. a low pressure steam engine, a

pipe for delivering steam from the exhaustof the high pressure engine tothe thermal stora ge apparatus, a pipe for delivering steam from thethermal-storage apparatus to the low pressure engine. a branch pipeconnecting said pipes together so that steam may be the exhaust of thehigh pressure engine to the low pressure engine without passing into thethermal-storage apparatus, and means in said branch pipe forautomatically varying the ratio of the quantity I of. steam passing intothethermal-storage apparatus to the quantity of steam passing directlyfrom the high pressure engine .to the low pressure engine withvariations in the ratio of the quantity of steam supplied by theexhaustof the high pressure engine to the quantity of steam taken by thelow pressure engine.

3. In comb nation, a high pressure steam.

engine, a .water heating and thermal storage apparatus, a low pressuresteam engine, a pipe for delivering steam from theexhaust of the highpressure engine to the thermalstorage apparatus, a pipe for deliveringsteam from thethermal storage apparatus to the low pressure engine, abranch pipe connecting said pipes together so that steam may be passedfrom the exhaust of the high pressure engine to the low pressure enginewithout passing into the thermal storage apparatus, and a steamcontrolled valve for nuton'mtically varying the ratio of the quantity ofsteam passing into the thermal-stop age apparatus to the quantity ofsteam passing dirt-wily from the high pressure engine to the lowpressure engine with variations in the ratio of the quantity of steamsupplied by the exhaust of the high pressure engine.

to the quantity of steam taken by the low pressure engine. 10

In testimony whereof, I affix my signature in presence '0 two witnesses.

DONALD BARNS MORISON. Witnesses:

SIMPSON Anms'rxzos'e, ROBERT MORRISON Nmnsox.

